organ parasitic mode stage note taxonomic group parasite
leaf vagrant Aphididae Defractosiphon brevisiphon
leaf vagrant Aphididae Semiaphis dauci
vagrant Aphididae Dysaphis libanotidis
leaf vagrant summer generation Aphididae Cavariella aegopodii
leaf vagrant summer generation Aphididae Aphis fabae fabae
root collar vagrant Aphididae Aphis seselii
systemic vagrant summer generation Aphididae Aphis spiraephaga
stem vagrant Aphididae Aphis franzi
leaf gall Triozidae Bactericera crithmi
fruit borer doubtful Agromyzidae Liriomyza lituanica
stem borer Agromyzidae Melanagromyza sativae
stem miner Agromyzidae Ophiomyia bohemica
leaf vagrant Aphididae Defractosiphon franzi
fruit gall Cecidomyiidae Kiefferia pericarpiicola
flower gall Cecidomyiidae Lasioptera carophila
leaf down Erysiphales Erysiphe heraclei
leaf down Peronosporales Plasmopara nivea
leaf gall Cecidomyiidae Jaapiella dittrichi
leaf gall Eriophyidae Aceria peucedani
leaf gall Taphrinales Protomyces macrosporus
leaf miner doubtful Agromyzidae Phytomyza heracleana
leaf miner Agromyzidae Phytomyza libanotidis
leaf miner doubtful Agromyzidae Phytomyza mylini
leaf miner Agromyzidae Phytomyza seseleos
leaf miner Epermeniidae Epermenia aequidentellus
leaf miner Epermeniidae Epermenia chaerophyllella
leaf miner Tephritidae Euleia heraclei
leaf pustule aecia Pucciniales Uromyces graminis
leaf pustule uredinia telia Pucciniales Puccinia libanotidis
leaf pustule uredinia telia Pucciniales Puccinia nitida
leaf pustule uredinia telia Pucciniales Puccinia seseleos
leaf vagrant Aphididae Semiaphis dauci seselii
leaf vagrant summer generation Aphididae Aphis fabae
stem gall Asterolecaniidae Planchonia arabidis
stem gall doubtful Cecidomyiidae Lasioptera umbelliferarum
leaf vagrant Aphididae Semiaphis dauci seselii
root collar vagrant summer generation Aphididae Anuraphis pyrilaseri
leaf vagrant Aphididae Acyrthosiphon nigripes
flower vagrant doubtful Aphididae Aphis grosmannae
leaf vagrant doubtful Aphididae Aphis brohmeri

Organ

the part of the plant that most conspicuously is hit by the parasite

all buds: both flower buds and leaf buds
flower: also inflorescence
leaf: also needle, phyllodium, petiole
leaf bud: also unfolding young leaf
fruit: also seed
root: also root stock, runners
root collar: also the lowest part of the stem
stem: also culm, the lower part of the peduncle, in grasses also leaf sheath
systemic: the entire above-ground plant.

PARASITIC MODE

borer: larva living internally, almost no outwards signs
down: 0.5-2 mm high fungal down
film: very thin cover of fungal tussue
gall: swelling and/or malformation
grazer: feeding at the outside of the plant
leaf spot discoloured, often ± necrotic, generally not galled, sign of a fungus infection
miner-borer: larve initially makes a mine, lives as a borer later
pustule: plug of fungal tissue, generally brown-black and < 2 mm
stripe: longitudinal line of fungal tissue in a grass leaf
vagrant: (aphids, mites) living freely on the plant, at higher densitiy causing malformations.

IMPORTANT

The host plant spectre of a parasite is rarely known exhaustively; this applies in particular at the species level. It is advisable therefore to check at least also the list of all parasites of this genus.

 

mod 1.ii.2019